1620162 has 40 divisors (see below), whose sum is σ = 3706956. Its totient is φ = 528768.

The previous prime is 1620161. The next prime is 1620209. The reversal of 1620162 is 2610261.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1610361 + 9801 = 1269^2 + 99^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1620161) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11758 + ... + 11894.

2^1620162 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1620162, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1853478).

1620162 is an abundant number, since it is smaller than the sum of its proper divisors (2086794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1620162 is a wasteful number, since it uses less digits than its factorization.

1620162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1620162 is about 1272.8558441552. The cubic root of 1620162 is about 117.4499439722.

1620162 divided by its sum of digits (18) gives a palindrome (90009).

Subtracting 1620162 from its reverse (2610261), we obtain a palindrome (990099).

The spelling of 1620162 in words is "one million, six hundred twenty thousand, one hundred sixty-two".